Metal strip edging apparatus



Sept 26, 1967 w. GAUER ETAL METAL STR-IP EDGING APPARATUS Filed April 27, 1964 3 Sheets-Sheet 1 m .mi

.NNN NN A gg A JNVENTORS M y MX SePt- 265-1967 w. GAui-:R ET AL METAL STRIP EDGING APPARATUS 5 Sheets-Sheet 5 Filed April 27, 1964 United States Patent O 3,343,394 METAL STRIP EDGING APPARATUS Walter Gauer, 48 S. 18th St., Kenilworth, NJ. 07033, and Richard E. Hathaway, Colonial Road, Brookside, NJ. 07926 Filed Apr. 27, 1964, Ser. No. 362,660 16 Claims. (Cl. 72 199) This invention deals with a metal strip safety edging apparatus and more particularly with a metal strip safety edging apparatus for safety edging slit metal strips within a wide range of strip width and thickness dimensions.

The apparatus of the invention comprises cooperating elements especially adapted not only to accommodate a wide range of metal strip dimensions in the edging operation, but to provide for the accurate and controlled edging of strip materials composed of various metals and metal alloys including relatively soft as well as relatively hard metals with controlled edging accuracy.

When metal strip of desired dimensions is sheared or slit from comparatively wider metal sheet stock, there is the attendant formation of burrs or ridges out of the plane of the strip surfaces or out of the plane of the narrow strip edge normal to the longitudinal dimension of the strip. These burrs or ridges are often extremely sharp and present a hazard in the handling of the sheared or slit strip. Apart from the potential hazard the sheared edges lack straight-edged uniformity and are disadvantageous, for example, when edge-to-edge welding or close fit edge abutment is contemplated.

Various types of strip metal apparatus are known but in general they lack the versatility of easily accommodating a wide range of strip dimensions, they lack operability to provide constant edge tolerances with a wide variety -of metal compositions, and they are otherwise unable to provide uniform edging of strips having slight variations in width.

It is an object of the invention to provide a strip metal edging apparatus adapted to accommodate a large number of metal strips during the edging operation.

It is another object of the invention to provide a metal strip edging apparatus adapted to accommodate a wide variety of metal compositions for accurate and controlled edging ofthe work material. Y

It is a further object of the invention to provide an edging apparatus easily adjustable for operation with strips of different widths and compositions.

It is a still further object of the invention to provide a safety strip edging apparatus for simultaneously safety edging a plurality of strips emerging from a slitting machine.

It is a still further object of the' invention to provide an apparatus for safety edging strip material and which incorporates cooperative components to provide for controlled yieldable edging pressures.

Other objects and advantages of the invention will become apparent from the description hereinafter following and the drawings forming a part hereof, in which:

FIGURE l illustrates an elevational side view of the apparatus according to the invention,

FIGURE 2 illustrates a top view of FIGURE l,

FIGURE 3 illustrates an end elevational view along lines 3 3 of FIGURE 1,

FIGURE 4 illustrates a partly elevational and partly cross-sectional view along lines 4 4 of FIGURE 1,

FIGURE 5 illustrates a partly elevational and partly cross-sectional view along lines 5 5 of FIGURE 4,

FIGURE 6 illustrates a partly elevational and partly cross-sectional partial view showing a component part of the invention viewed normal to and along lines 6 6 of FIGURE 4,

FIGURES 7 and 8 illustrate block components,

FIGURE 9 illustrates a fragmentary cross-sectional view of linkage along lines 9 9 of FIGURE 1,

FIGURE 10 illustrates an enlarged fragmentary plan view of a deburring component configuration according to the invention,

FIGURE l1 illustrates an enlarged fragmentary elevational view of cooperating components adapted to accom- -modate narrow strips in a deburring operation,

FIGURE 11A illustrates an enlarged fragmentary elevational view of cooperating components adapted to accommodate strips of greater width in a deburring operation, and

FIGURE l2 illustrates a diagrammatic view showing a plurality of deburring units in laterally spaced relationship to accommodate a plurality of closely spaced parallel strips.

Referring to FIGURES 1, 2 and 3 the invention comprises a strip edging apparatus having a rst pair of laterally spaced aligned supports 1 and 2 and a substantially similar second pair of laterally spaced aligned supports 3 and 4. The first and second support pairs are also laterally spaced from each other. The supports 1 and 2 have 'bases 5 and 6, respectively, either integrally interconnected by bridge B, illustrated in FIGURE 3, or are separatelysecurable to a bench, or the like, and support arms 7 and 8, respectively, extending upwardly from their respective bases. Each support arm 7 and 8 is provided with a bore '9 and 10 at a location above the base with the bores being coaxially aligned. The arms 7 and 8 are interconnected by a pivot shaft 11, e.g. a bolt shaft, passing through the bores. The similar supports 3 and 4 are correspondingly provided with bases 12 and 13, arms 14 and 15, bores 16 and 17 and pivot shaft 18, which correspond in structure, configuration and relative position to like components of the rst pair of supports. Lever means in the form of a pair of substantially T-shaped laterally spaced lever arms 19 and 20 each being identical and having a leg 21 with cross-'bar 22 are rotatably mounted on the pivot shaft 11 with the lever arm 19 being adjacent support arm 7 and lever arm 20 being adjacent support arm 8. The pair of T-cross-bars each have opposite ends 23 and 24 with bores 25 and 26 respectively, formed therethrough. The cross-bars of the pair of laterally spaced levers are rotatably interconnected by shafts 27 and 28, respectively, passing through the axially aligned bores, while the cross-bars are likewise rotatably interconnected intermediate the ends 23 and 24 on the aforementioned shaft 11. The legs 21 of the levers 19 and 20 are each provided with a pair of laterally spacedbores isometric views of mating 29 and 30 with a shaft 31 passing therethrough and interconnecting the legs through the bores 29. The function of lbore 30 is hereinafter described. A pair of laterally spaced elongated clutch arms 32 and 33 are mounted on shaft 11 through one end portion of each of the clutch arms and positioned adjacent the inner sides of the lever arms 19 and 20, respectively. At a location intermediate the ends thereof, the clutch arms are mounted on shaft 31, thereby aixing the lever arms against a relative movement between the lever arms and the clutch arms. Mounted between the other ends of the clutch arms 32 and 33, as particularly illustrated by FIGURE 9 in conjunction with FIGURES 1, 2 and 3, is a spacer means 34 having oppositely extending lugs 35 and 36 engaging complementary recesses 315 and 36 in the free end portions of clutch arms 32 and 33. The spacer is provided with an internally threaded bore 37 therethrough transversally of the spacer axis. A pair of laterally spaced substantially L- shaped adapters 38 and 39 are each mounted on one of the support arms 7 and 48 with head portions 40 and 41, respectively, being secured to upper edges 42 and 43 of the support arms 7 and y8 and leg portions 44 and 45 extending toward the bases and 6 and secured along the inner surfaces of the support arms. A second spacer means 46 is provided with oppositely extending lugs 47 and 48 engaging recesses 49 and 50 in the inner surfaces of adapters 38 and 39. The second spacer is provided with an internally threaded bore 51 transversally therethrough. The threads of bore 37 of spacer 34 are of greater pitch than the threads of bore 51. A screw member 52 is provided lwith a hand turn wheel 53 at one end thereof. The other end portion of the screw member 52 is provided with dual screw sections `54 and 55, one preceding the other and such that the rst section 55 is of greater pitch than the second section 54. The screw member 52 is engaged with both spacers 34 and 46 so that the rst screw section 55 engages the threaded bore 37 of spacer 34 and the second section 54 engages the smaller pitch threaded bore 51 of spacer 46. Consequently, turning of hand wheel 53 causes the clutch arms 32 and 33 and the aflxed lever legs 21 to move a greater distance along screw section 55 than the axial movement of the screw section 54 in spacer 46. Otherwise stated, the rotary movement of hand wheel 53 along a substantially small arch provides for a -controlled operative angular movement of the lever cross-'bars 22 on the pivot shaft 11 through the activation of the clutch arms 32 and 33 affixed to the levers 19 and 20.

Referring to FIGURES 1 and 2, a second pair of laterally spaced elongated levers 56 and 57 having end portions 58 and 59 are rotatably mounted intermediate their ends 58 and S9 on the pivot shaft 18. The end portions 58 and 59 of the pair of levers are provided with bores 60 and 61 and rotatably interconnected by means of shafts 62 and 63 which are, respectively, mounted in the coaxially aligned lbores 60 and 61. Blocks 64 and 65 are mounted on shafts 27 and 28 between the end portions 23 and 24 of the lever cross-bar 22, with the shafts 27 and 28 passing through block 'bores 66 through each of the blocks. Blocks `67 and 68 are mounted on shafts 62 and 63 between end portions 58 and 59 of levers 56 and 57. The blocks 64 and 67 are each provided with a pair of spaced bores 69 and 70 normally of bores 25 and 60 with the shafts 27 and 62 passing therebetween. Blocks 65 and 68 are identically provided with bores corresponding to bores 69 and 67 of blocks 64 and 67. A first parallel pair of spaced bridge rails 71 and 72 have their opposite ends threadedly mounted in the bores 69 and 70 and are secured to blocks 64 and 67 by identical nuts 72, thereby interconnecting the blocks 64 and 67. A second parallel pair of spaced bridge rails 73 and 74 are identically mounted on and interconnect the blocks 65 and 68, the second pair of rails being variably spaceable from the rst pair of rails along a small arch generated by the axes of shafts 27 and 28 about the pivot shaft 11.

In operation, rotary manipulation of the hand wheel 53 causes screw section 54 of screw 52 to move a relatively small distance axially of bore 51 (FIGURE 9) with a relatively greater movement of spacer 34 axially of screw section 55. The movement of spacer 34, being secured to the pair of clutch arms 32 and 33, which are connected to the lever arms 19 and 20 through shaft 31 (FIGURE 1) causes the shafts 27 and 28 to move along a small arc generated by the said shafts about the axis of pivot shaft 11. With the blocks 64 and 67 being mounted on shafts 27 and 62, the activation of the lever arms 19 and 20 causes the pairs of parallel rails to move in opposite directions relative to each other both longitudinally thereof and along a small arch generated by the shafts 27 and 28 about the pivot shaft 11.

Having provided the above-described apparatus according to FIGURES l, 2, 3 and 9, strip edging components are mounted on the spaced pairs of spaced parallel rails.

Referring to FIGURES 4, 5, 7 and 8, a composite Split mounting block comprising substantially rectangular block sections 75 and 76 is adapted for mounting on the rst and second pairs of rails. The block section is provided with a substantially flat inlet face 77 having a centrally located inlet counterbore 78 formed into the fiat face 77 and terminating in an internal abutment face 79 internally of the block. The counterbore 78 is partly internally threaded as at 78 of FIGURE 5. An outlet bore 80 of smaller diameter than the counterbore is formed eccentrically of the counterbore axis through the abutment face 79 and terminates in the plane of and through the outlet face 81. A pair of laterally spaced substantially semi-cylindrical parallel channels 82 and 83, with the counterbore 78 therebetween, are formed in the face 77 and they are directed across said face 77 at acute angles relative to the sides of the rectangular `block section. A pair of recesses 84 and 85 are cut-away from opposite sides of the block along portions of a common edge 86, each recess terminating in flat seats 87 and 88 spaced from each other along the said edge 86. Blind mounting bores 89 and 90 in axial alignment with each other are formed one each in the seats 87 and 88 in a direction toward each other. Blind pin bores 91 and 92 are similarly formed in said seats 87 and 88 in spaced relationship relative to the bores 89 and 90. Abutment pins 93 (FIGURES 4 and 5) are inserted into pin bores 91 and 92 and extend outwardly of the seats 87 and 88. Referring to FIG- URE 8, the block section 76 is provided with a flat face 94 and with substantially semi-cylindrical channels 95 and 96 mating the face 77 and channels 82 and 83 when positioned facing each other. A bore 97 is formed through block 76 coaxially of counterbore 78. For securing the blocks there is provided an externally threaded screw 98 with a head 99 at one end and a threaded shank 100 which passes through bore 111 and engages bore 112. The letter designations C, D, E and F of FIGURES 7 and 8 are illustratory in showing the relative dimensions and the mating relationship of the two block sections. The blocks 75 and 76 are positioned on rails 71 and 72, as illustrated by FIGURES 2 and 4, with the rails engaged between the block sections and positioned in the angularly directed channels 82-95 and 83-96 so that the blocks are longitudinally angularly disposed relative to the parallel rails. Having so positioned the block sections on the rails, the blocks are mounted and secured as illustrated in FIGURES 2, 4 and 5. A sleeve member 101 having an externally threaded collar 102 intermediate the ends thereof and a bore 103 therethrough is threadedly engageable with the counterbore 78. The sleeve 101 has at one end portion a piston cavity 104 of greater internal diameter than that of the internal bore 103. The piston cavity terminates in an abutment face 105 internally of the sleeve. A helical compression spring 106 is mountable in the piston cavity 104 with one end thereof in abutment with the abutment face 105. A cylindrical piston member 107 is inserted in the piston cavity substantially at the end thereof with one end face in abutment with the other end of the compression spring, the piston member being dimensioned for piston action with the internal surface walls of the piston cavity. A pin member 107 extends outwardly of the other end face of the piston member eccentrically of the piston axis.

Having provided the assembly components comprising the sleeve, screw member, spring and piston, the sleeve with the spring and piston mounted in the piston cavity, is threadedly engaged with the collar 102 threaded with counterbore internal threads 78 and with the eccentric pin 107 extending into and outwardly of the eccentric bore 80 of block section 75. The blocks 75 and 76 are brought into mating position on rails 71 and 72 with an unthreaded portion of the sleeve 101 rearwardly of the collar 102 mounted internally of the bore 97 of block 76. With the blocks so positioned, the screw 98 is inserted through a bore 111 through block section 76, with the bore being spaced from the bore 97, and into threaded engagement with an internally threaded blind bore 112 in block section 75, the bore 112 being spaced from the counterbore 78. Y

Referring to FIGURES 4, and 6, an elongated headstock member 113 is mounted on the block section 75. The headstock member comprises an outer cylindrical tubular sleeve 114 having a pair of parallel lugs 115 and 116 extending tangentially outwardly of the sleeve 114v normal to the sleeve axis and spaced longitudinally thereof. Each lug is provided with a terminal abutment means 117 and 118, respectively, and with a bore 119 and 120, respectively, formed therethrough and in coaxialalignment with each other. The headstock 113 is mounted on the block section 75 with the inner faces of the spaced lugs in engagement with the seats 87 and 88, with the abutment means 117 and 118 facing and abutable with abutment pins 93. The headstock is rotatably secured to the block section 75 by means of partly threaded bolts 121 and 122 with bolt 121 passing through bore 119 threadedly into bore 89 and with bolt 122 passing through bore 120 threadedly into bore 90, respectively. The outer surface of sleeve 114 is provided with a longitudinal recess eccentrically of the sleeve axis and having an abutment seat 123 normal to and eccentric of the sleeve axis, the abutment seat .123 being laterally spaced from the lugs 115 and 116 peripherally of the sleeve 114 and engagea'ble with the end of pin 107', as hereinafter more particularly described. An elongated shaft 124 is rotatably mounted through the sleeve 114 with its deburring or edginghead 125 (FIGURE ll) extending outwardly of one end of the sleeve and its opposite mounting end 126 extending outwardly of the other end of the sleeve. The end of the sleeve 114 adjacent the mounting end 126 is externally threaded as at 127 and an internally threaded retainer cap 128 is thereby threadedly securable onto the said end of the sleeve. The mounting end 126 is provided with a reduced annular bearing seat or neck 129 with an annular ball bearing means 130 mounted thereon and positioned between the seat and the inner Wall of the cap 128. The ball bearing means 130 is secured on said neck against movement axially of the shaft 124 by said neck and a top portion of the cap 128. An aperture 131 is formed through the cap top and a retainer ring 132 of greater diameter than the neck is affixed to the end of the end of neck 129 thereby securing the shaft 124 relativevto the cap 128. Consequently, removal of the cap from the sleeve 114 is accompanied by the simultaneous removal of the shaft from the sleeve. Needle bearing 133 and 134 are positioned in the sleeve 114 intermediate the shaft and the inner surfaces of the sleeve. A centering terminal ball bearing means 135 is mounted in the sleeve 114 adjacent its other or free end portion and intermediate the shaft 124 and sleeve 114. It is apparent that the shaft 124, mounted as described, is freely rotatable relative to the sleeve 114 and cap 128. In view of the angular mounting of the bracket sections 75 and 76 relative to rails 71 and 72, it is apparent that the headstock 113 is likewise so angularly positioned and parallel with the block sections 75 and 76. y

A second Vcomposite block comprising block sections 75 and 76' is mounted on the second pair of rails 73 and 74. The second composite block comprising block sections 75 and 76 is identical with the composite block comprising block sections 75 and 76 and is likewise identically mounted on the secondV pair of rails 73 and 74.

A second headstock 113' of identical structure cornpared'to headstock 113 as illustrated by primed numerals is similarly mounted on block section 76' with the exception that the headstock 113 is directed in its mounting on block'section 75' in reverse position relative to headstock 113 so that the'deburring heads 125 and 125 are positioned adjacent each other as illustrated in FIGURES 1 and 11. Regarding FIGURES 1 and 2, a plurality of identical laterally spaced parallel headstocks 113, 113a, 11311, etc., are mounted on rails 71 and 72 and a plurality of identical laterally spaced headstocks 113', 113C, 113d, etc., are mounted on the rails 73 and 74.

Referring to FIGURES l and 1l, the cylindrical deburring heads and 125' of shafts 124 and 124 are each provided with a coaxial V-shaped groove 136 and 136', respectively, adjacent the free ends of the said shafts. Preferably, but not necessarily, the shafts 124 and 124 are mounted in their respective sleeves 114 and 114 at an angle of 45 relative to rails 71 and 73.

In operation, the several composite blocks mounted on the spaced pairs of rails as described supra are slidably manipulated along their respective rails so that a plurality of laterally spaced strips 137, 138, 139, 140, 141, 142, 143, 144 of specified width are freely insertable and loosely retained in the V-shaped grooves of the cooperating adjacent deburring heads 125 and 125', etc. The headstocks and their respective shafts 124, 124', etc. are then iixed in such position by tightening securing bolts 98 which secure the composite blocks along the rails.

Having loosely and freely retained the several parallel strips between their respective cooperating ldeburring heads and in the V-shaped grooves, the hand turn wheel 53 is operated and activates levers 22 which move the space pairs of rails in opposite directions, e.g. toward each other, with the deburring heads moving likewise to more firmly secure the strips in the grooves of their respective pairs of deburring heads. Having lirmly secured the strips, each of the headstocks are rotatably and yieldably pressurized against the edges of the strips under yieldable compression empirically selected for the metal composition of the strips. This is accomplished by threadedly advancing the sleeves 101 into the piston cavities 104 thereby exerting compression forces afforded by compression spring 106 against piston 107 whereby piston pins 107 engage the eccentric seats 123 tending to rotate headstocks 113 and 113 on their axes and toward each other. In lieu of the compression springs 106 other compression means such as rubber resilient means or gas pressure means may be substituted so long as the compression means are capable of controlled yieldability. It will be recognized that the advancement of sleeves 101 will control the yieldability of compression springs 106. In other words, the deburring heads 125 and 125 and their respective V-shaped grooves, with the strips positioned therein, are under resultant forces of compression afforded by the strips and the advancement of sleeve 101 against the compression means. The term resultant forces of compression refers to the resultant forces generated by the strips in opposition to the forces employed in comprising the springs 106.

Having so set each of the headstocks, a parallel set of strips having strips which are of the same width or widths which may vary within a prescribed tolerance, are effectively deburred by passing, e.g. by pulling the strips between their cooperating pairs of -deburring heads which coin or press the burrs or ridges back into the strip edge. Also, in addition to the initial established controlled yieldability of the spring 106 as described above, it is apparent that the degree of turning of hand wheel 53 in activatinglevers 22 permit a further optimum pressurization against the strips in consideration of the metal composition of the strips and their degree of hardness or softness. When a set of parallel strips are deburred, the hand wheel 53 is turned in an opposite direction moving the deburring heads away from each other suiiiciently to permit the engagement of a new set of parallel strips. In this case, since the sleeves 101 have been previously set as described above, the pins 107 are in contact with seats 123 with the headstocks in their maximum degree of rotation toward each other as illustrated by FIGURE 5. Therefore, operation of the hand wheel 53, with the strip 137 positioned between the headstocks, causes the headstocks and their respective deburring heads to move toward each other against the strip whereby such movement causes the headstocks to turn on their .axes in a counter direction with the eccentric seats 123 activating pins 107' in pressurization against the strips. It is evident that in such case, with the position of the headstocks on their respective rails once established, the simple operation of hand wheel 53 is effective in providing and controlling optimum compression against the strips.

There are mechanical limits to the widths of strips which can be effectively deburred with the deburring heads 125 and 125 positioned at the 45 angle illustrated in FIGURE 1l and activated by means of the dual screw sections 54 and 55 of screw member 52. To overcome such limitation, an auxiliary set of composite split mounting blocks are provided which are otherwise identical with block sections 75 and 76 except that the channels 82-95 and 83-96 of block sections 75 and 76 are substituted by similar channels angularly directed to provide, when mounted on the rails, angles less than about 45 with the rails, e.g. 15 angles as illustrated in FIG- URE llA. In such case wider strips 137' may be easily and effectively accommodated within prescribed strip width tolerances, provided, however, that in such case the lever leg 21 (FIGURE l) is adjusted by removing the shaft 31 (by means of a punch member or the like inserted through bores 30 in support arms 7 and 8) from engagement with bores 29, moving the leg 21 until the leg bores 30 are in alignment with bores 30' and replacing the shaft 31 into engagement with leg bores 30. With the lever now in its alternate position the dual thread screw 52 will effectively operate with the auxiliary split mounting blocks for the edging of the wider strips 137. Alternatively, a long bolt means (not shown) having a diameter corresponding with shaft 31 may be inserted through the leg bores 30 and also through the support arm bores 30 provided that the bores 30 are of larger diameter than the bolt diameter thereby affording a play between the bolt and bores 30 sufficient to permit a relative movement of the bolt in the bores 30'. This is possible since the action of the dual screw sections of screw 52 need provide only a small lateral movement of the deburring heads 125 and 125 once the heads are positioned relative to each other as described above.

It will be seen in FIGURE l1 that the grooves 136 and 136' are `aligned with each other with the apices of the V-shaped groove being substantially in a common plane passing through the metal strip 137 positioned therebetween. While some tolerance in strip widths is permissible, greater strip widths would require a sm-all increase in lateral spacing between the grooves 136 and 136. When the lateral spacing of the grooves relative to each other is so increased, the apices of the grooves are no longer in the -aforesaid common plane. In order to rectify this condition to maintain the alignment of the apices in a common plane, the increase in the later spacing between the grooves 136 and 136 is accompanied by an attendant retraction of the deburring heads 125 and 125 axially of the sleeves 114 and 114'. In order to maintain the proper degree of retnaction during the edging operation, spacers 128', e.g. spacer rings, are inserted adjacent the threaded portion 127 and between head 128 and the sleeve 114 as illustrated in FIGURE 6. The width of the spacer rings are determined in consideration of the width of the strip workpiece employed.

Referring to FIGURES 1 and 2, it will be seen that the strips 137, 138, 139, etc., lare rather widely spaced apart. The substantially wide spacing between the strips is necessitated in consideration of the bulk and diametrical dimensions of the headstocks 113, 11311, 113b, etc., which prevent the deburring heads 125 and 125 from adjacent spacing close enough to accommodate parallel workpiece strips closely adjacent each other, for example, as emerging from an upstream sheet slitting apparatus. In order to accommodate such closely adjacent workpiece strips, a plurality of metal strip edging apparat-us units X, Y and Z are provided in series with each other as illustrated by FIGURE 12, whereby closely adjacent parallel strips are accommodated. In such case alternate strips are handled by one of the units X, Y and Z. For example, while the unit X operates in connection with strips 137 through 144, the next downstream unit Y operates on alternate strips through 152 and the following downstream unit Z operates on strips 153 through 160. In this manner closely adjacent parallel strips are accommodated.

In accordance with FIGURE 10, the apparatus of the invention incorporates a preferred form of V-shaped deburring head in order to provide for the deburring of strips of different thicknesses by the same apparatus. The deburring head 165 comprises an annular V-shaped deburring groove 166 having converging opposite walls 167 and 168 composed, of respectively, bevelled sections 169, and 171 and 172, 173 'and 174 constituting a series of flat faces converging toward each other in the direction of the groove axis. For example, the outer V- shaped sections 169 and 172 may be bevelled at an angle of 30 with a plane normal to the groove axis, the intermediate sections 170 and 173 may be so bevelled at 25 angles, and the terminal sections 171 and 174 may be so bevelled at 20 angles. Preferably but not necessarily, the opposite cooperating sections may each extend a 1/a distance along the converging walls.

It is apparent that the edges of the wider strips being deburred will contact sections 169 and 172, the edges of the narrower strips will contact the intermediate sections 170 and 173, and the edges of the narrowest strips will contact the terminal sections 171 and 174.

Various modifications of the invention are contemplated within the scope of the appended claims.

What is claimed is:

1. Apparatus for edging metal strip material, comprising first and second substantially cylindrical strip edging members, first and second edging member mount means, the edging members each being rotatably mounted on one of the mount means, a pair of elongated longitudinally movable carriage means, the mount means each being secured to one of the carriage means, the carriage means being substantially parallel to each other and bridged at both ends by la lever means pivoted therebetween, the lever means being rotatably connected to the pair of carriage means, means for activating the levers about their pivots, whereby the carriage means are longitudinally movable relative to each other.

2. Apparatus for edging metal strip material according to claim 1, wherein the edging members each have a circumferential V-shaped groove therein, each groove being defined by continuously converging opposite walls, each opposite wall comprising in series a plurality of flat-faced bevelled wall sections converging relative to each other in the direction of the groove axis at different angles progressively smaller measured from a common plane normal to the groove axis and bisecting the V-shaped groove.

3, Apparatus for edging metal strip material according to claim 2, wherein the respective wall sections are bevelled at angles of 30, 25 and 20 with said plane in the driection ofthe groove axis.

4. Apparatus for edging metal strip material according to claim 2, wherein each bevelled section of each wall extends a distance of substantially one-third the distance from the periphery of the edging member to the terminal ofthe V-shaped groove.

5. Apparatus according to claim 1, wherein each carriage means comprises la pair of laterally spaced rails fixedly mounted relative to each other.

6. Apparatus for edging metal strip material, comprising first and second substantially cylindrical strip edging members, first and second edging member mount means, the edging members each being rotatably mounted on one of the mount means, a pair of elongated longitudinally movable carriage means, the mount means each being secured to one of the carriage means, the car- `riage means being substantially parallel to each other and bridged at both ends by elongated lever means pivoted therebetween, end portions of the lever means being rotatably connected to the pair of carriage means, iirst and second carriage support means spaced from each other longitudinally of the carriage means, the lever means each being rotatably mounted on the carriage support means at their pivots, and means for activating the levers `about their pivots, whereby the carriage means are longitudinally movable in opposite directions relative to each other.

7. Apparatus for edging metal strip material according to claim 6, wherein each carriage support means comprises a pair of laterally spaced arms, a pivot shaft interconnecting the spa-ced arms, the lever means being pivoted on the pivot shaft between the spaced carriage support arms.

8. Apparatus for edging strip material according to claim 7, comprising an elongated clutch member having one end -rotatably mounted on the pivot shaft adjacent the lever means between the spaced carriage support arms, the clutch member being secured to the lever means at a location intermediate the ends of the clutch member, and clutch activating means connected to the other end of the clutch member.

9. Apparatus for edging metal strip material comprising rst and second substantially cylindrical strip edging members, first and second edging member mount means, the edging members each being rotatably mounted in one of the mount means, a pair of elongated longitudinally movable carriage means, the carriage means each being laterally spaced relative to each other, the mount means each being secured to one of the carriage means, means for moving the pair of carriage means longitudinally relative to each other, rst and second edging heads each on an end portion of an edging member, the edging heads being positioned substantially adjacent each other and each edging head having a circumferentially V-shaped groove therein for debur'ring edges of the metal 'strip material positioned therebetween.

10. Apparatus for edging metal strip material according to claim 9, wherein the edging heads are positioned substantially between the pair of carriage means.

11. Apparatus for edging metal strip material according to claim 9, comprising a series of edging members fand their respective mount means on each of the pair of Icarriage means and longitudinally thereof.

12. Apparat-us for edging metal strip material according to claim 9, wherein the carriage means are substantially parallel to each other and bridged at both end portions by elongated lever means pivoted therebetween, end portions of the lever means being rotatably connected to the pair of carriage means.

ed in one of the mount means, a pair of elongated longitudinally movable carriage means, the carriage means each being laterally spaced relative to each other, the mount means each being secured to one of the carriage means, means for moving the pair of carriage means longitudinally relative to each other, iirst and second edging Iheads each on an end portion of an edging member, the edging heads being positioned substantially adjacent each other, the mount means each comprising a tubular member, a cap engaged with one end portion of the tubular member, one end portion of each of the edging members being rotatably mounted on thecap, the other end portion of each of the edging members passing through the tubular member, the edging heads being located on the said other end portions of the ed-ging members.

14. Apparatus for edging metal strip material according to claim 13, comprising spacer means positioned on said one end portion of the tubular member in abutment with said caps.

15. Apparat-us for edging metal strip material comprising rst and second substantially cylindrical strip edging members, rst and second edging member mount means, the edging members each being rotatably mounted in one of the mount means, a pair of elongated longitudinally movable carriage means, the carriage means each being laterally spaced relative to each other, the mount means each being secured to one of the carriage means, means for moving the pair of carriage means longitudinally relative to each other, first and second edging heads each on an end portion of an edging member, the edging heads being positioned substantially adjacent each other and each edging head having a cir- 13. Apparatus for edging metal strip material comprising rst and second substantially cylindrical strip edging members, rst and second edging member mount means, the edging members each being rotatably mountcumferential V-shaped ygroove therein for deburring edges of the metal strip material positioned therebetween, tirst and second block means each mounted on one of the pair of carriage means, channel means in the block means, the carriage means being positioned in the channel means, the mount means being rotatably secured to the block means.

16. Apparatus for edging metal strip material accord- Ving to claim 15, comprising lug members extending outwardly of each of the mount means,

the lugs being lrotatably connected to the block means.

References Cited UNITED STATES PATENTS 1,109,521 9/1914 Fraser 72--220 2,063,798 12/1936 Firth 72-203 2,326,715 8/ 1943 Wilson et al. 72-365 2,353,290 7/1944 Benr'ewitz 72-242 3,206,965 9/ 1965 Grauer 72-206 CHARLES W. LANHAM, Primary Examiner. RICHARD I. HERBST, Examiner. ALAN RUDERMAN, Assistant Examiner. 

1. APPARATUS FOR EDGING METAL STRIP MATERIAL, COMPRISING FIRST AND SECOND SUBSTANTIALLY CYLINDRICAL STRIP EDGING MEMBERS, FIRST AND SECOND EDGING MEMBER MOUNT MEANS, THE EDGING MEMBERS EACH BEING ROTATABLY MOUNTED ON ONE OF THE MOUNT MEANS, A PAIR OF ELONGATED LONGITUDINALLY MOVABLE CARRIAGE MEANS, THE MOUNT MEANS EACH BEING SECURED TO ONE OF THE CARRIAGE MEANS, THE CARRIAGE MEANS BEING SUBSTANTIALLY PARALLEL TO EACH OTHER AND BRIDGED AT BOTH ENDS BY A LEVER MEANS PIVOTED THEREBETEEN, THE LEVER MEANS BEING ROTATABLY CONNECTED TO THE PAIR OF CARRIAGE MEANS, MEANS FOR ACTIVATING THE LEVERS ABOUT THEIR PIVOTS, WHEREBY THE CARRIAGE MEANS ARE LONGITUDINALLY MOVABLE RELATIVE TO EACH OTHER. 